Regression in msvideo patch

[Stephen Mollett]

Hi,

[Following on from a thread on wine-users]

I've had some problems recently with running the VirtualDub video 
post-processing package on Wine. It used to work, but then stopped working 
(it no longer displays the frame previews when seeking in a video file) 
recently.

I've done a regression test and narrowed the problem down to the patch 
described in:

http://www.winehq.com/hypermail/wine-cvs/2002/11/0187.html

Before this patch (2002-11-20 13:47:00 CST), frame preview works normally in 
VirtualDub. Afterwards, vdub crashes when seeking. Later cvs versions don't 
crash but don't display frames either.

The console output from Wine includes:

fixme:msvideo:DrawDibRealize (0x1, 0x8f4, 0), stub

just once before a load of messages similar to:

fixme:psapi:EnumProcessModules (hProcess=0xffffffff, 0x425cf000, 4096, 
0x405c0038)
fixme:psapi:GetModuleBaseNameA (hProcess=0xffffffff, hModule=0x400000, "", 
65212): stub
fixme:psapi:GetModuleBaseNameA (hProcess=0xffffffff, hModule=0x425e0000, "", 
65212): stub
fixme:psapi:GetModuleBaseNameA (hProcess=0xffffffff, hModule=0x78000000, "", 
65212): stub
...

when a crash occurs; the later non-crashing versions just display loads of 
messages similar to the first one about DrawDibRealize.

If you like, I can try to track down when the crashing behaviour changed to 
simple non-drawing.

Regards,

Stephen